David Underbakke's AthGFNSieve
(Another of the Prime Pages' resources)
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program A titan, as defined by Samuel Yates, is anyone who has found a titanic prime. This page provides data on those that have found these primes. The data below only reflect on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s): g244, g289, g295, g296, g297, g303, g310, g312, g333, g359, p142, p139, p143, p160, g410, g413, g419, p259
E-mail address:
david9(at)underbakke(dot)com
Web page:http://www.underbakke.com/AthGFNsv
Username: AthGFNSieve (entry created on 01/03/2003)
Database id:439 (entry last modified on 10/14/2009)
Program Does *: sieve
Active primes:on current list: 18, rank by number 19
Total primes: number ever on any list: 905
Production score: for current list 47 (normalized: 1073), total 47.6498, rank by score 13
Largest prime: 24518262144+1 ‏(‎1150678 digits) via code g413 on 03/12/2008
Most recent: 386892131072+1 ‏(‎732377 digits) via code p259 on 10/14/2009
Entrance Rank: mean 31.83 (minimum 6, maximum 107)

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AthGFNSv and the 64 bit program AthGfn64 are programs to rapidly presieve Generalized Fermat candidates removing composite numbers. AthGFNSv supports trial division for small ranges and both programs support wide mode true sieve for larger ranges. The 64 bit version is 60%-80% faster.

They can be found at http://www.underbakke.com/AthGFNSv

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Surname: AthGFNSieve (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.